/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
  color: #0a0a0a;
  background: #ffffff;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid #ececec;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.02em;
}
.brand-now {
  color: #e11d2a;
  font-weight: 700;
}
.nav nav a {
  margin-left: 28px;
  font-size: 14.5px;
  color: #444;
  transition: color .15s ease;
}
.nav nav a:hover { color: #000; }
.nav-cta {
  background: #0a0a0a;
  color: #fff !important;
  padding: 8px 14px;
  border-radius: 999px;
}
.nav-cta:hover { background: #222; }

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 80px;
  background:
    radial-gradient(1200px 500px at 80% -10%, #eef2ff 0%, transparent 60%),
    radial-gradient(900px 400px at 0% 10%, #fef3f3 0%, transparent 55%),
    #ffffff;
}
.hero h1 {
  font-size: clamp(40px, 6vw, 68px);
  max-width: 900px;
  font-weight: 700;
}
.hero .lead {
  margin-top: 22px;
  font-size: clamp(17px, 1.5vw, 19px);
  max-width: 640px;
  color: #444;
}
.cta-row {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  transition: transform .12s ease, background .15s ease, color .15s ease;
}
.btn-primary {
  background: #0a0a0a;
  color: #fff;
}
.btn-primary:hover { background: #1f1f1f; transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: #0a0a0a;
  border: 1px solid #d6d6d6;
}
.btn-ghost:hover { border-color: #0a0a0a; }

/* hero feature cards */
.feature-grid {
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: #fff;
  border: 1px solid #ececec;
  border-radius: 16px;
  padding: 26px;
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.feature-card:hover {
  border-color: #d4d4d4;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px -12px rgba(0,0,0,0.12);
}
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: #f3f4f6;
  font-size: 16px;
  color: #0a0a0a;
  margin-bottom: 14px;
}
.feature-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.feature-card p  { font-size: 14.5px; color: #555; }

/* ---------- Sections ---------- */
.section { padding: 110px 0; }
.section-alt { background: #fafafa; border-top: 1px solid #f0f0f0; border-bottom: 1px solid #f0f0f0; }
.section-dark { background: #0a0a0a; color: #fff; }
.eyebrow {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #6b6b6b;
  margin-bottom: 18px;
}
.eyebrow-light { color: #b3b3b3; }
.section h2 {
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 700;
  max-width: 820px;
}
.section-lead {
  margin-top: 18px;
  max-width: 680px;
  font-size: 17px;
  color: #555;
}
.section-lead.light { color: #cfcfcf; }

/* ---------- Numbered cards (challenge) ---------- */
.numbered-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.numbered-card {
  background: #fff;
  border: 1px solid #ececec;
  border-radius: 18px;
  padding: 30px;
}
.num {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: #9ca3af;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}
.numbered-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.numbered-card p  { color: #555; font-size: 15px; }

.stat-callout {
  margin-top: 48px;
  padding: 28px 32px;
  background: #0a0a0a;
  color: #fff;
  border-radius: 18px;
  font-size: 18px;
}
.stat-callout strong { color: #ffd8d8; }

/* ---------- Platform grid ---------- */
.platform-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.platform-card {
  position: relative;
  background: #fafafa;
  border: 1px solid #ececec;
  border-radius: 18px;
  padding: 32px;
  transition: border-color .15s ease, transform .15s ease;
}
.platform-card:hover { border-color: #c9c9c9; transform: translateY(-2px); }
.platform-card h3 { font-size: 22px; font-weight: 600; margin-bottom: 10px; }
.platform-card p  { color: #555; font-size: 15px; margin-bottom: 16px; }
.link-arrow {
  font-size: 14px;
  font-weight: 500;
  color: #0a0a0a;
  border-bottom: 1px solid transparent;
  transition: border-color .15s ease;
}
.link-arrow:hover { border-color: #0a0a0a; }

/* ---------- Tech ---------- */
.tech-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.tech-card {
  background: #fff;
  border: 1px solid #ececec;
  border-radius: 18px;
  padding: 28px;
}
.tech-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 14px; }
.tech-card li {
  padding: 8px 0;
  font-size: 14.5px;
  color: #444;
  border-top: 1px solid #f0f0f0;
}
.tech-card li:first-child { border-top: none; }
.tech-tag {
  margin-top: 48px;
  font-size: 14px;
  color: #6b6b6b;
  letter-spacing: 0.04em;
}

/* ---------- Timeline ---------- */
.timeline {
  margin-top: 56px;
  position: relative;
  padding-left: 28px;
  list-style: none;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: #e6e6e6;
}
.timeline li {
  position: relative;
  padding: 14px 0 22px;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 22px;
  width: 12px; height: 12px;
  background: #0a0a0a;
  border-radius: 999px;
  box-shadow: 0 0 0 4px #fff;
}
.t-time {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #9ca3af;
  margin-bottom: 4px;
}
.timeline h4 { font-size: 18px; font-weight: 600; margin-bottom: 4px; }
.timeline p  { color: #555; font-size: 15px; }

/* ---------- Impact / audiences ---------- */
.audience-row {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.audience-pill {
  background: #fff;
  border: 1px solid #e2e2e2;
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  color: #222;
}
.benefit-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.benefit-card {
  background: #fff;
  border: 1px solid #ececec;
  border-radius: 18px;
  padding: 28px;
}
.benefit-card h3 { font-size: 19px; font-weight: 600; margin-bottom: 8px; }
.benefit-card p  { color: #555; font-size: 15px; }

/* ---------- Use cases ---------- */
.usecase-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.usecase-card {
  background: #fafafa;
  border: 1px solid #ececec;
  border-radius: 18px;
  padding: 28px;
}
.usecase-card h3 { font-size: 19px; font-weight: 600; margin-bottom: 8px; }
.usecase-card p  { color: #555; font-size: 15px; }

/* ---------- Contact (dark) ---------- */
.contact-inner { text-align: left; max-width: 760px; }
.section-dark h2 { color: #fff; }
.email-link {
  display: inline-block;
  margin-top: 28px;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  color: #fff;
  border-bottom: 2px solid #fff;
  padding-bottom: 4px;
}
.email-link:hover { color: #d8d8d8; border-color: #d8d8d8; }

/* ---------- Footer ---------- */
.footer {
  background: #0a0a0a;
  color: #aaa;
  border-top: 1px solid #1a1a1a;
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer .logo { color: #fff; }
.copy { font-size: 13.5px; }

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .feature-grid,
  .numbered-grid,
  .platform-grid,
  .tech-grid,
  .benefit-grid,
  .usecase-grid {
    grid-template-columns: 1fr;
  }
  .nav nav a { margin-left: 16px; font-size: 13.5px; }
  .section { padding: 80px 0; }
  .hero { padding: 72px 0 60px; }
}
@media (max-width: 520px) {
  .nav nav a:not(.nav-cta) { display: none; }
}